private void Cart_Load(object sender, EventArgs e)
{
button1.Enabled = false;
if (!orderController.IsCartEmpty())
{
orderController.LoadBillToCart(dataGridView1, CustomerId, BillNumberTextBox, textBox1);
label2.Text = orderController.GetTotalBillAmount(dataGridView1).ToString();
button1.Enabled = true;
}
}
